CNN

CNN Audio

6 PM ET: Debate rules accepted, new Trump indictment, Utah mom’s murder case & more
5 Things
Listen to
CNN 5 Things
Tue, Aug 27
New Episodes
How To Listen
On your computer On your mobile device Smart speakers
Explore CNN
US World Politics Business
special

Three Identical Strangers: The Science Behind The Story

Join CNN's Chief Medical Correspondent Dr. Sanjay Gupta as he explores the themes in the award-winning CNN Film Three Identical Strangers. The film tells the shocking story behind triplets and the scientific study that separated them. Can we get good science from experiments with questionable ethics? Where do scientists stand on the nature-nurture debate? Do twins really have a special connection? Astronaut twins Mark and Scott Kelly join Dr. Gupta for a special conversation probing into the minds of multiples. And in a bonus episode, we hear from the filmmakers about their mission to share this remarkable story with the world.

Back to episodes list

The Biggest Question: Nature, Nurture or Both?
Three Identical Strangers: The Science Behind The Story
Dec 19, 2018

Does our genetic code matter more than our environments? Join CNN's Chief Medical Correspondent Dr. Sanjay Gupta as he wrestles with the age-old nature-nurture debate. First, Sanjay brushes up on genetics 101 with Dr. Ruth Tennen. Then, he discusses what studying twins can teach us about nature and nurture with twin expert and psychologist Dr. Nancy Segal.